use std::fs;
use std::io::{BufRead, BufReader, Write};
use std::net::{TcpListener, TcpStream};
use WebServer::ThreadPool;

fn main() {
 let listener = TcpListener::bind("127.0.0.1:8080").unwrap();
    let pool = ThreadPool::new(4);
    for stream in listener.incoming() {
        let stream = stream.unwrap();

        pool.execute(|| {
            handle_connection(stream);
        });

    }
}

fn handle_connection(mut stream: TcpStream ) {
    let buf_reader = BufReader::new(&mut stream);
    let request_line = buf_reader.lines().next().unwrap().unwrap();

    let (status_line, filename) = if request_line == "GET / HTTP/1.1" {
        ("HTTP/1.1 200 OK", "www/hello.html")

    }else {
        ("HTTP/1.1 404 NOT FOUND", "www/404.html")
    };

    let contents = fs::read_to_string(filename).unwrap();
    let length = contents.len();

    let response = format!(
        "{status_line}\r\nContent-Length: {length}\r\n\r\n{contents}"
    );

    stream.write_all(response.as_bytes()).unwrap();

}